This dissertation would not have been possible without the prodigious, incomparable, heuristic and great help of my supervisor, Professor Titular. Ignasi Navarro i Ferrando, who stood close to me every step, whenever I needed, and provided everything necessary for the progress of my thesis. Many thanks go, too, to Renata Geld, Head of the English Department at the Faculty of Foreign Languages, Zagreb, Croatia, who, very conventionally conduced promising facilities during my Research Stay, there. Certainly, there's also a place here to thank the head of the English Department and many of my colleagues at the Faculty of Foreign Languages, Tirana, Albania, who willingly shared with me very useful scientific knowledge throughout the days while at work. I would also like to thank the representatives of the University departments of Jaume I, who were always ready in fulfilling and replying many of my queries while working on my dissertation. Last but not least, as the saying goes after Shakespeare, I would like to thank my father and especially my mother who, although resting in peace, were a strong encouragement and along with my two most loving daughters Estrea and Nejmia renewed and shaped my previous and actual scientific information in the field of linguistics by giving me peace, love and tenderness. On the whole, I would like to thank everyone who in a way or another finds this work useful and serves them hereafter.